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nfs: fix comment and add warn_on for PG_INODE_REF 

Fix the comment in nfs_page.h for PG_INODE_REF to reflect that it's no longer
set only on head requests. Also add a WARN_ON_ONCE in nfs_inode_remove_request
as PG_INODE_REF should always be set.

Suggested-by: Peng Tao <tao.peng@primarydata.com>
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
This commit is contained in:
Weston Andros Adamson 2014-07-17 20:42:16 -04:00 committed by Trond Myklebust
parent e7029206ff
commit b412ddf066
2 changed files with 3 additions and 1 deletions
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2
fs/nfs/write.c
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@ -707,6 +707,8 @@ static void nfs_inode_remove_request(struct nfs_page *req)
if (test_and_clear_bit(PG_INODE_REF, &req->wb_flags))
nfs_release_request(req);
else
WARN_ON_ONCE(1);
}
static void

2
include/linux/nfs_page.h
View File

@ -26,7 +26,7 @@ enum {
PG_MAPPED, /* page private set for buffered io */
PG_CLEAN, /* write succeeded */
PG_COMMIT_TO_DS, /* used by pnfs layouts */
PG_INODE_REF, /* extra ref held by inode (head req only) */
PG_INODE_REF, /* extra ref held by inode when in writeback */
PG_HEADLOCK, /* page group lock of wb_head */
PG_TEARDOWN, /* page group sync for destroy */
PG_UNLOCKPAGE, /* page group sync bit in read path */